<![CDATA[SoliForum - 3D Printing Community — printing squared circles]]> 2015-11-04T14:01:50Z PunBB https://www.soliforum.com/topic/12707/printing-squared-circles/ <![CDATA[Re: printing squared circles]]> well my printer isn't printing well,
and im not too versed on s3D yet so I cant get the tensioner printed.

]]> https://www.soliforum.com/user/3698/ 2015-11-04T14:01:50Z https://www.soliforum.com/post/108873/#p108873 <![CDATA[Re: printing squared circles]]> If you want to go direct drive print this:
http://www.thingiverse.com/thing:593006

Buy these for coupling the motor to the shaft:
https://www.amazon.com/gp/aw/d/B004HW71 … &psc=1

https://www.amazon.com/gp/aw/d/B004HW71 … &psc=1

Buy a 6mm diameter shaft from anywhere (I like McMastsr-Carr), and cut it to size.

]]> https://www.soliforum.com/user/7321/ 2015-11-04T01:57:34Z https://www.soliforum.com/post/108853/#p108853 <![CDATA[Re: printing squared circles]]> thankyou to everyone for all the help
hope the tension print gets done tonight.

]]> https://www.soliforum.com/user/3698/ 2015-11-03T21:56:39Z https://www.soliforum.com/post/108844/#p108844 <![CDATA[Re: printing squared circles]]> pirvan wrote:

I had the same identical problem, and it was due to backlash on the small belt.  Some people fixed the problem by doing a direct drive setup, I solved it by adding a tensioning idler bearing.

http://www.soliforum.com/topic/8357/y-s … belt-slop/

I haven't had any flat spots on my circles since I did this mod.

ill try this see what happens

]]> https://www.soliforum.com/user/3698/ 2015-11-03T14:09:59Z https://www.soliforum.com/post/108819/#p108819 <![CDATA[Re: printing squared circles]]> so what you guys have been saying is that small belt from the y axis motor is sloppy?

so where is the file to print the tensioner?

or how would I do direct drive for cheap

]]> https://www.soliforum.com/user/3698/ 2015-11-03T01:53:06Z https://www.soliforum.com/post/108776/#p108776 <![CDATA[Re: printing squared circles]]> if you want to fix flat circles forever and be done with it, go direct drive. no other option is better. search the forum. that small belt is sloppy. it makes tensioning the belts easier too.

]]> https://www.soliforum.com/user/7321/ 2015-11-03T01:30:29Z https://www.soliforum.com/post/108771/#p108771 <![CDATA[Re: printing squared circles]]> so now i have just a very slight flat edge in those same spots
the bars seem to be aligned.

not sure what to do now.

its still rough to move the y compared to the x axis .
the x axis is super smooth and not even close to as tight as my y
why is this so hard for me?

]]> https://www.soliforum.com/user/3698/ 2015-11-02T23:43:46Z https://www.soliforum.com/post/108763/#p108763 <![CDATA[Re: printing squared circles]]> +1 to what Tim said. I've been using Ian's belt tension gauge since I started printing. It's easy, a relatively quick print, and accurate. If you understand this concept, you don't need to print a thing. Just use what you have lying around.

]]> https://www.soliforum.com/user/4188/ 2015-11-02T23:25:43Z https://www.soliforum.com/post/108760/#p108760 <![CDATA[Re: printing squared circles]]> The x rods should be square to the  Y. If they are not.  this could be the source of binding.  Or as heartless put it not properly aligned.
Tin

]]> https://www.soliforum.com/user/6775/ 2015-11-02T23:07:15Z https://www.soliforum.com/post/108759/#p108759 <![CDATA[Re: printing squared circles]]> elmoret wrote:

You can also hang a weight from the belt and measure how much it deflects, which is proportional to tension.

now I just feel dumb, that that didn't cross my mind.

]]> https://www.soliforum.com/user/3698/ 2015-11-02T21:51:02Z https://www.soliforum.com/post/108741/#p108741 <![CDATA[Re: printing squared circles]]> You can also hang a weight from the belt and measure how much it deflects, which is proportional to tension.

]]> https://www.soliforum.com/user/221/ 2015-11-02T20:46:49Z https://www.soliforum.com/post/108735/#p108735 <![CDATA[Re: printing squared circles]]> heartless wrote:
ryan-mm85 wrote:

so im pretty much screwed then, because I have no way to make sure the tension is the "same"

it isn't that difficult if you have feeling in your fingers. if they feel about the same, they should be fine. you don't want one tight and the other loose.

before you give up, at least try it. roll

oh I get what you are saying,
I thought I needed like special method. lol

ill check that stuff tonight hopefully.

so the left and right carriages being slightly misaligned would give me a rough Y axis travel then?

]]> https://www.soliforum.com/user/3698/ 2015-11-02T20:33:22Z https://www.soliforum.com/post/108733/#p108733 <![CDATA[Re: printing squared circles]]> ryan-mm85 wrote:

so im pretty much screwed then, because I have no way to make sure the tension is the "same"

it isn't that difficult if you have feeling in your fingers. if they feel about the same, they should be fine. you don't want one tight and the other loose.

before you give up, at least try it. roll

]]> https://www.soliforum.com/user/10399/ 2015-11-02T19:09:24Z https://www.soliforum.com/post/108720/#p108720 <![CDATA[Re: printing squared circles]]> so im pretty much screwed then, because I have no way to make sure the tension is the "same"

]]> https://www.soliforum.com/user/3698/ 2015-11-02T19:00:52Z https://www.soliforum.com/post/108719/#p108719 <![CDATA[Re: printing squared circles]]> heartless wrote:

loose set screws are a potential problem - you will need a 1.5mm hex driver/allen key to make sure they are tight.

If the Y axis (front to back) is not smooth it means the left & right carriages are not properly aligned. With the power off and disconnected, loosen those set screws, and work the carriages back and forth - don't force things - until things loosen up and they do move smoothly, then re-tighten the set screws, being careful to keep things in alignment.

belts should be snug - no slop in them - but not overly tight, either.

a quick test is with carriages all the way back you should just be able to pinch the 2 sides of the belt together about in the middle of space between carriage and idler pulley with a little bit of resistance - both sides need to be even in tension, too, or you will end up with misalignment problems again.

your last long sentence I don't understand. I think I need a comma or a period somewhere.

]]> https://www.soliforum.com/user/3698/ 2015-11-02T18:59:12Z https://www.soliforum.com/post/108718/#p108718